Gree U-Crown GWH09UB-K6DNA4A User manual

Service Manual
Change for life
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

Table of Contents
Service Manual
Table of Contents
Part Ⅰ: Technical Information.......................................................................1
1. Summary......................................................................................................................1
2. Specications..........................................................................................................2
2.1 Specication Sheet...........................................................................................................2
2.2 Operation Characteristic Curve ........................................................................................6
2.3 Capacity Variation Ratio According to Temperature .........................................................7
2.4 Cooling and Heating Data Sheet in Rated Frequency .....................................................8
2.5 Noise Curve......................................................................................................................8
3. Outline Dimension Diagram........................................................................9
3.1 Indoor Unit........................................................................................................................9
3.2 Outdoor Unit ...................................................................................................................10
4. Refrigerant System Diagram....................................................................12
5. Electrical Part.........................................................................................................13
5.1 Wiring Diagram...............................................................................................................13
5.2 PCB Printed Diagram .....................................................................................................16
6. Function and Control......................................................................................20
6.1 Remote Controller Introduction .....................................................................................20
6.2 GREE+ App Operation Manual ......................................................................................26
6.3 Ewpe Smart App Operation Manual ...............................................................................27
6.4 Brief Description of Modes and Functions......................................................................28
Part Ⅱ: Installation and Maintenance .................................................35
7. Notes for Installation and Maintenance..........................................35
8. Installation................................................................................................................39
8.1 Installation Dimension Diagram......................................................................................39
8.2 Installation Parts-checking ............................................................................................41
8.3 Selection of Installation Location....................................................................................41
8.4 Requirements for electric connection .............................................................................41
8.5 Installation of Indoor Unit................................................................................................41
8.6 Installation of Outdoor Unit.............................................................................................44
8.7 Vacuum Pumping and Leak Detection ...........................................................................45
8.8 Check after Installation and Test Operation ...................................................................45

Table of Contents
Service Manual
9. Maintenance............................................................................................................46
9.1 Error Code List ...............................................................................................................46
9.2 Procedure of Troubleshooting ........................................................................................52
9.3 Troubleshooting for Normal Malfunction.........................................................................66
10. Exploded View and Parts List ..............................................................68
10.1 Indoor Unit....................................................................................................................68
10.2 Outdoor Unit .................................................................................................................72
11. Removal Procedure.......................................................................................76
11.1 Removal Procedure of Indoor Unit ...............................................................................76
11.2 Removal Procedure of Outdoor Unit ............................................................................85
Appendix:........................................................................................................................95
Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................95
Appendix 2: Conguration of Connection Pipe.....................................................................95
Appendix 3: Pipe expanding method....................................................................................96
Appendix 4: List of Resistance for Temperature Sensor ......................................................97

1
Technical Information
Service Manual
1. Summary
Indoor Unit:
Outdoor Unit:
Remote Controller:
Part Ⅰ: Technical Information
SAA1FB1
GWH09UB-K6DNA4A/I
GWH12UB-K6DNA4A/I
GWH18UC-K6DNA4A/I
GWH09UB-K6DNA4A/O
GWH12UB-K6DNA4A/O
GWH18UC-K6DNA4A/O
No Model Product code Indoor model Indoor product
code Outdoor model Outdoor product code
Remote
Controller
1 GWH09UB-K6DNA4A CB264002100 GWH09UB-K6DNA4A/I CB264N02100 GWH09UB-K6DNA4A/O CB264W02100
SAA1FB12 GWH12UB-K6DNA4A CB264002200 GWH12UB-K6DNA4A/I CB264N02200 GWH12UB-K6DNA4A/O CB264W02200
3 GWH18UC-K6DNA4A CB264002000 GWH18UC-K6DNA4A/I CB264N02000 GWH18UC-K6DNA4A/O CB264W02000
Models List:

2Technical Information
Service Manual
Parameter Unit Value
Model GWH09UB-K6DNA4A GWH12UB-K6DNA4A
Product Code CB264002100 CB264002200
Power
Supply
Rated Voltage V~ 220-240 220-240
Rated Frequency Hz 50 50
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity W 2700 3530
Heating Capacity W 3200 4000
Cooling Power Input W 600 883
Heating Power Input W 780 1000
Cooling Power Current A 3.68 5.8
Heating Power Current A 4.42 6.8
Rated Input W 2300 2400
Rated Current A 10.5 10.5
Air Flow Volume (SH/H/MH/M/ML/L/SL/SM) m3/h 550/450/390/330/290/250/220/- 650/500/450/400/330/250/200/180
Dehumidifying Volume L/h 0.8 0.8
EER W/W 4.50 4.00
COP W/W 4.10 4.00
SEER 7.5 7.2
SCOP(Average/Warmer/Colder) 4.6/5.7/3.6 4.6/5.5/3.6
Application Area m212-18 16-24
Indoor Unit
Model GWH09UB-K6DNA4A/I GWH12UB-K6DNA4A/I
Product Code CB264N02100 CB264N02200
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) mm Ф92X616 Ф92X616
Fan Motor Cooling Speed r/min 1350/1127/1000/870/780/690/600/550 1400/1185/1053/920/829/741/650/550
Fan Motor Heating Speed r/min 1400/1151/1074/1000/930/842/750/- 1500/1185/1119/1053/958/842/750/-
Output of Fan Motor W 10 10
Fan Motor RLA A 0.3 0.3
Fan Motor Capacitor μF / /
Input of Heater W / /
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Ф7 Ф7
Row-n Gap mm 2-1.5 2-1.5
Coil Length (LXDXW) mm 623X25.4X304.8 623X25.4X304.8
Swing Motor Model MP24HD/MP20AC MP24HD/MP20AC
Output of Swing Motor W 1.5/1.5 1.5/1.5
Fuse A 3.15 3.15
Sound Pressure Level dB (A) Cooling:41/36/32/28/25/23/20/19
Heating:41/36/34/32/29/26/24/-
Cooling:42/37/33/29/26/23/21/19
Heating:58/51/47/43/40/37/35/33
Sound Power Level dB (A) Cooling:57/50/46/42/39/37/34/33
Heating:57/50/48/46/43/40/38/-
Cooling:43/37/35/33/29/26/24/-
Heating:58/51/49/47/43/40/38/-
Dimension (WXHXD) mm 860X305X170 860X305X170
Dimension of Carton Box (LXWXH) mm 932X385X280 932X385X280
Dimension of Package (LXWXH) mm 935X388X295 935X388X295
Net Weight kg 11.5 11.5
Gross Weight kg 14 14
2. Specications
2.1 Specication Sheet

3
Technical Information
Service Manual
The above data is subject to change without notice; please refer to the nameplate of the unit.
Outdoor Unit
Model GWH09UB-K6DNA4A/O GWH12UB-K6DNA4A/O
Product Code CB264W02100 CB264W02200
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR
CO., LTD
ZHUHAI LANDA COMPRESSOR
CO., LTD
Compressor Model QXFT-B123zE170B QXFT-B123zE170B
Compressor Oil FW68DA FW68DA
Compressor Type Rotary Rotary
L.R.A. A 20 20
Compressor RLA A 7.9 7.9
Compressor Power Input W 1230 1230
Overload Protector HPC115/95U1/KSD115°C HPC115/95U1/KSD115°C
Throttling Method Electron expansion valve Electron expansion valve
Operation temp °C 16~30 16~30
Ambient temp (cooling) °C -18~54 -18~54
Ambient temp (heating) °C -30~24 -30~24
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Ф7 Ф7
Rows-n Gap mm 2-1.4 2.5-1.4
Coil Length (LXDXW) mm 783X38.1X550 763X57X550
Fan Motor Speed rpm 850 850
Output of Fan Motor W 30 30
Fan Motor RLA A 0.24 0.24
Fan Motor Capacitor μF / /
Air Flow Volume of Outdoor Unit m3/h 2400 2400
Fan Type Axial-ow Axial-ow
Fan Diameter mm Ф438 Ф438
Defrosting Method Automatic Defrosting Automatic Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IPX4 IPX4
Permissible Excessive Operating
Pressure for the Discharge Side MPa 4.3 4.3
Permissible Excessive Operating
Pressure for the Suction Side MPa 2.5 2.5
Sound Pressure Level (H/M/L) dB (A) 52/-/- 53/-/-
Sound Power Level (H/M/L) dB (A) 62/-/- 63/-/-
Dimension (WXHXD) mm 899X596X378 899X596X378
Dimension of Carton Box (LXWXH) mm 945X417X630 945X417X630
Dimension of Package (LXWXH) mm 948X420X645 948X420X645
Net Weight kg 42 43.5
Gross Weight kg 45 46.5
Refrigerant R32 R32
Refrigerant Charge kg 0.95 0.9
Connection
Pipe
Length m 5 5
Gas Additional Charge g/m 16 16
Outer Diameter Liquid Pipe mm Ф6 Ф6
Outer Diameter Gas Pipe mm Ф9.52 Ф9.52
Max Distance Height m 10 10
Max Distance Length m 15 20
Note: The connection pipe applies metric diameter.

4Technical Information
Service Manual
Parameter Unit Value
Model GWH18UC-K6DNA4A
Product Code CB264002000
Power
Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Power Supply Mode Outdoor
Cooling Capacity W 5300
Heating Capacity W 5300
Cooling Power Input W 1450
Heating Power Input W 1430
Cooling Power Current A 6.5
Heating Power Current A 6.5
Rated Input W 2500
Rated Current A 10.6
Air Flow Volume (SH/H/MH/M/ML/L/SL) m3/h 850/750/650/600/500/400/340
Dehumidifying Volume L/h 2.0
EER W/W 3.66
COP W/W 3.70
SEER 6.8
SCOP(Average/Warmer/Colder) 4/5.1/3.1
Application Area m223-34
Indoor Unit
Model GWH18UC-K6DNA4A/I
Product Code CB264N02000
Fan Type Cross-ow
Diameter Length(DXL) mm Ф107X699
Fan Motor Cooling Speed r/min 1350/1150/1050/930/800/700650/600
Fan Motor Heating Speed r/min 1400/1200/1100/1000/900/800/750
Output of Fan Motor W 20
Fan Motor RLA A 0.44
Fan Motor Capacitor μF /
Input of Heater W /
Evaporator Form Aluminum Fin-copper Tube
Pipe Diameter mm Ф7
Row-n Gap mm 2-1.5
Coil Length (LXDXW) mm 706X25.4X303.8
Swing Motor Model MP24HV/MP24AQ
Output of Swing Motor W 1.5/1.5
Fuse A 3.15
Sound Pressure Level dB (A) Cooling:46/40/37/33/28/24/22/21
Heating:56/50/47/43/38/32/31/-
Sound Power Level dB (A) Cooling:49/43/41/38/36/32/28/-
Heating:59/53/51/48/46/42/38/-
Dimension (WXHXD) mm 960X320X205
Dimension of Carton Box (LXWXH) mm 1040X400X318
Dimension of Package (LXWXH) mm 1043X403X333
Net Weight kg 14
Gross Weight kg 17

5
Technical Information
Service Manual
The above data is subject to change without notice; please refer to the nameplate of the unit.
Outdoor Unit
Model GWH18UC-K6DNA4A/O
Product Code CB264W02000
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR
CO., LTD
Compressor Model QXFT-B123zE170B
Compressor Oil FW68DA or equivalent
Compressor Type Rotary
L.R.A. A 20
Compressor RLA A 7.9
Compressor Power Input W 1230
Overload Protector HPC115/95orKSD115°C
Throttling Method Electron expansion valve
Operation temp °C 16~30
Ambient temp (cooling) °C -18~54
Ambient temp (heating) °C -30~24
Condenser Form Aluminum Fin-copper Tube
Pipe Diameter mm Ф7
Rows-n Gap mm 2-1.4
Coil Length (LXDXW) mm 852X38.1X660
Fan Motor Speed rpm 820
Output of Fan Motor W 60
Fan Motor RLA A 0.5
Fan Motor Capacitor μF /
Air Flow Volume of Outdoor Unit m3/h 3200
Fan Type Axial-ow
Fan Diameter mm Ф520
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating
Pressure for the Discharge Side MPa 4.3
Permissible Excessive Operating
Pressure for the Suction Side MPa 2.5
Sound Pressure Level (H/M/L) dB (A) 57/-/-
Sound Power Level (H/M/L) dB (A) 67/-/-
Dimension (WXHXD) mm 965X700X396
Dimension of Carton Box (LXWXH) mm 1026X455X735
Dimension of Package (LXWXH) mm 1029X458X750
Net Weight kg 50.5
Gross Weight kg 55
Refrigerant R32
Refrigerant Charge kg 1.4
Connection
Pipe
Length m 5
Gas Additional Charge g/m 20
Outer Diameter Liquid Pipe mm Ф6
Outer Diameter Gas Pipe mm Ф12
Max Distance Height m 10
Max Distance Length m 25
Note: The connection pipe applies metric diameter.

6Technical Information
Service Manual
2.2 Operation Characteristic Curve
0
1
2
3
4
5
6
7
8
9
10
020406080 100 120
Condition
Indoor:DB 27°C WB19°C
Indoor air flow: Turbo
Pipe length:5m
Voltage:230V
Compressor Speed(rps)
0
1
2
3
4
5
6
7
8
020406080 100 120
Condition
Indoor:DB 20°C
Indoor air flow:Turbo
Pipe length:5m
Voltage:230V
Compressor Speed(rps)
Cooling Heating
Current(A)
Current(A)
50
60
70
80
90
100
110
120
130
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46
Capacity ratio(%)
Condition
Indoor:DB27°C WB19°C
Indoor air flow:
Turbo
Pipe length:5m
Outdoor temp. (°C)
Capacity ratio(%)
gnitaeHgnilooC
-20-15 -10-50 510
110
120
130
100
90
80
70
60
50
40
Outdoor temp.(°C)
Condition
Indoor:DB20°C
Indoor air flow:
Turbo
Pipe length:5m
Cooling
Cooling
Heating
Heating
01020304050607090 80 0102030405060708090100 120110
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A(tnerruC
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A(tnerruC
CoolingHeating
Conditions
Indoor: DB27°C/WB19°C
Indoor air flow: High
Pipe length: 5m
Conditions
Indoor: DB20°C/WB15°C
Indoor air flow: High
Pipe length: 5m
18K
09/12K

7
Technical Information
Service Manual
2.3 Capacity Variation Ratio According to Temperature
Cooling Heating
Outdoor Temp.(°C) Outdoor Temp.(°C)
Capacity ratio(%)
Capacity ratio(%)
29 34 39 44 49 54
60
70
80
90
100
110
120
50
40 40
50
120
110
100
90
80
70
60
1070-8-20
-30 -15
Conditions
Indoor: DB20°C/WB15°C
Indoor air flow: High
Pipe length: 5m
Conditions
Indoor: DB27°C/WB19°C
Indoor air flow: High
Pipe length: 5m
Cooling
Capacity ratio( %)
Heating
Outdoor temp.(°C)Outdoor temp.(°C)
32 34 36 38 40 42 44 46 5448 50 52
100
105
95
90
85
80
75
70
65
60
55
50
Conditions
Indoor:DB27°C/WB19°C
Indoor air flow:Super High
Pipe length: 5m
40
50
120
110
100
90
80
70
60
10
70-8-20
Capacity ratio(%)
-30 -15
Conditions
Indoor:DB20°C
Indoor air flow:Super High
Pipe length: 5m
09/12K
18K
Cooling Heating

8Technical Information
Service Manual
2.4 Cooling and Heating Data Sheet in Rated Frequency
2.5 Noise Curve
Rated cooling
condition(°C) (DB/WB) Model
Pressure of gas pipe
connecting indoor
and outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger Fan speed of
indoor unit
Fan speed of
outdoor unit
Compressor
revolution
(Hz)
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
27/19 35/24 09/12K 0.9 to 1.1 12 to 14 75 to 37 Super High High 66
27/19 35/24 18K 0.9 to 1.0 in:8~11
out:11~14
in:75~83
out:37~48 Super High High 73
Rated heating
condition(°C) (DB/WB) Model
Pressure of gas pipe
connecting indoor
and outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger
Fan speed of
indoor unit
Fan speed of
outdoor unit
Compressor
revolution
(Hz)
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
20/- 7/6 09/12K 2.8 to 3.0 70 to 35 2 to 4 Super High High 66
20/15 7/6 18K 2.2 to 2.4 in:75~83
out:37~45
in:1~3
out:2~6 Super High High 75
Instruction:
T1: Inlet and outlet pipe temperature of evaporator
T2: Inlet and outlet pipe temperature of condenser
P: Pressure at the side of big valve
Connection pipe length: 5 m.
Cooling:
Heating:
46
48
50
52
54
56
58
60
20 30 40 50 60 70 80 90 100
Compressor frequency(Hz)
Noise dB(A)
Heating
Cooling
Indoor fan motor rotating speed
60
40
50
30
10
20
Indoor fan motor rotating speed
Super
High
Super
sound-off
Super
Low
Middle
High
Middle
Low HighMiddleLow
Noise dB(A)
18K
18K
09/12K
09/12K
46
48
50
52
54
56
58
60
20 30 40 50 60 70 80 90 100
Compressor frequency(Hz)
Noise dB(A)
Heating
Cooling

9
Technical Information
Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
125 148
Φ55
Φ55
49.5
80
Φ55
Φ55
W
136
90 684 186
542 179
D
H
Unit:mm
Model W H D
09/12K 860 305 170
18K 960 320 205
09/12K
18K

10 Technical Information
Service Manual
3.2 Outdoor Unit
899
810
490
343
303
596
378
Unit:mm
Unit:mm
GWH09UB-K6DNA4A/O
GWH18UC-K6DNA4A/O
965
897 340
396
364
700
560

11
Technical Information
Service Manual
Unit:mm
GWH12UB-K6DNA4A/O
596
378
303
899
810
354
550

12 Technical Information
Service Manual
4. Refrigerant System Diagram
Connection pipe specication:
Liquid : 1/4" (6mm)
Gas pipe: 3/8" (9.52mm)09/12K
Gas pipe: 1/2" (12mm)18K
INDOOR UNITOUTDOOR UNIT
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
COMPRESSOR
GAS SIDE
3-WAY VALVE
LIQUID SIDE
2-WAY VALVE
COOLING
HEATING
Accumlator
Discharge
Suction
4-Way valve
Electron
Strainer Strainer
expansion
valve
Electron
expansion
valve
Strainer
D
Strainer
Intercooler
INDOOR UNI
TO
UTDOOR UNIT
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
COMPRESSOR
GAS SIDE
3-WAY VALVE
LIQUID SIDE
2-WAY VALVE
COOLING
HEATING
Accumlator
Discharge
Suction
4-Way valve
Electron
Strainer Strainer
expansion
valve
Strainer Capillary
D
Strainer
Intercooler
18K
09/12K

13
Technical Information
Service Manual
5. Electrical Part
5.1 Wiring Diagram
● Indoor Unit
●Instruction
Symbol Symbol Color Symbol Symbol Color Symbol Name
WH White GN Green CAP Jumper cap
YE Yellow BN Brown COMP Compressor
RD Red BU Blue Grounding wire
YEGN Yellow/Green BK Black / /
VT Violet OG Orange / /
Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model.
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14 Technical Information
Service Manual
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15
Technical Information
Service Manual
● Outdoor Unit
These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit.
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16 Technical Information
Service Manual
5.2 PCB Printed Diagram
Indoor Unit
1
3
45 78 910
11
12
13
15
2
6
14
● Top view
● Bottom view
1Interface of neutral wire 5Interface of live wire
for outdoor unit 9Tube temperature sensor 13 Up&down swing 2
2Interface of fuse 6Interface of jumper
cap 10 Ambient temperature sensor 14 Up&down swing 1
3Interface of live wire 7 Indoor fan motor 11 Communication interface for
radio-frequency, WIFI 15 Display interface
4Interface of communication wire
for neutral wire and live wire 8 Up&down swing 3 12 Interface of left&right swing / /
09/12K

17
Technical Information
Service Manual
89567
1
2
3
4
10 11
12
13
16
14
15
● Top view
● Bottom view
1Interface of neutral wire 5Interface of live wire for
outdoor unit 9 Up&down swing 3 13 Interface of left&right swing
2Health interface 6
Interface of communication
wire for neutral wire and live
wire
10 Tube temperature sensor 14 Up&down swing 2
3Interface of fuse 7Interface of jumper cap 11 Ambient temperature
sensor 15 Up&down swing 1
4Interface of live wire 8 Interface of DC motor 12 Communication interface
for radio-frequency, WIFI 16 Display interface
18K